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Jennifer Mazzeffi

Developmental Therapist · DT · Woodridge, IL
EI credential verifiedEarly Intervention · 0–3

Jennifer Mazzeffi is a credentialed Illinois Early Intervention developmental therapist based in Woodridge, serving children from birth to age 3. Languages other than English: Spanish.

License status checked June 10, 2026Source: IL Early Intervention registryHow we verifyReport an error

Verified record

Source: Illinois Early Intervention (Provider Connections) registry. This provider is credentialed through the state EI program rather than an IDFPR clinical license.

Role
Developmental Therapist · DT
Practice city
Woodridge
County
Dupage

Illinois Early Intervention

Holds an active credential in the Illinois Early Intervention program — the state system that serves children birth to age 3 with developmental delays or disabilities. Source: Provider Connections registry (Western Illinois University, for IDHS / IL Dept. of Early Childhood).

EI credential(s)
Developmental Therapy (Full)
Experience
306 lifetime EI service hours · credentialed ~13 yrs
Evaluations & assessments
Credentialed to perform EI evaluations/assessments
Languages spoken
Spanish
Areas served
DuPage County (CFC 5)
EI credential ID
JM79310109P
Bills through
Jennifer Mazzeffi dba, Chicago Kids Therapy, Inc.
Certificates
Developmental Therapy certificate

Need this provider for an EI plan, or want to add a provider to your child's team? Browse all Early Intervention providers

Affiliated clinics

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No clinic affiliation on file — provider has not provided attestation.

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Jennifer Mazzeffi
Developmental Therapist
EI credential verified · Provider Connections
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